As I re-read "On Pirates" by William Ashbless, I noticed something that slipped past me the first time. In "Those Two Liars", Ashbless mentions that Blaylock "...has gone into hiding up the coast, and has adopted a pseudonym now that his name is mud in the publishing industry...".

The very next chapter "Some Mysteries Unveiled at Last or What Really Happened" is written by a William Hastings. As we know, Hastings was a central character in "The Digging Leviathan" and this piece was probably a contribution of Blaylock himself.

A preliminary search of Abe Books has resulted in several options, there's a William M. Hastings (who's books were published in the 1920's), and a William T. Hastings (from the 50's) and one more contemporary William Hastings, who wrote "Programming Languages Paradigm and Practice C++"

That's not all... "Writing for Your Life" and "OPEN WIDE" were written by a Jonathan Bing in 1997-97, and "The Lost Colonists" was written by someone named David Quinn (Blaylock's main character in "Winter Tides").